The Supreme Court of the Christian States is the highest court in the Union of Christian States. It has ultimate (and largely discretionary) appellate jurisdiction over all federal courts and over state court cases involving issues of federal law, and original jurisdiction over a small range of cases. In the common law system of the Christian States, the Supreme Court is the final interpreter of federal constitutional law.

The Court meets in the Christian States Supreme Court Building in Beaumont, Texas and consists of a chief justice and eight associate justices who are nominated by the President and confirmed by the Christian States Senate. Once appointed, justices have life tenure unless they resign, retire, or are removed after impeachment (though none has ever been removed). In modern discourse, the justices are often categorized as conservative, moderate, or liberal. Each justice has one vote, and while many cases are decided unanimously, many of the highest profile cases often expose ideological beliefs that track with the positions of a particular political movement.